Sectional boiler for water and steam heating



Patented Feb. 2|, |899.

s. sumas. ssclorm. solLEn Fon WATER Ann smm HEATING.

(Application led Apr. 27, 1898.)

2 Sheets-Sheet L (No Model.)

THE' mums crans co; Prlofoumo.. wumncon. o. c,

No. 6I9,8.62. Patented Fab. 2l, '1899. S. BURNS.

SECTIUNAL BOILEITFDR WATER AND STEAM HEATING.

(Application Bled Apr. 27, 189B.) (No Model.) 2 Sheets-Shag! 2.`

In: norms PETERS un.; PNUYauTHn.. wAsNlumN. D. c,

` UNITED v'WATES PA-TENT FFICE.

SAMUEL BURNS, oF JERSEY CITY, NEW JERSEY.

SECTIONAL BOILE R FOR WATER AND STEAM HEATING.

SPECIFICATION forming part of Letters Patent No. 619,862, dated February 2i, 189e. Application filed April 27, 1898. I Serial No. 678,935. (No model.)

To all whom it may concern.'-

Be it known that I, SAMUEL BURNS, a citizen of the United States, residing at Jersey City, in the county of Hudson and State of New Jersey, have invented an Improvement in Sectional Boilers for Water and Steam Heating, of which the following is a specification.

Numerous boilers have been made of castiron in sections put together and in which the return circulation is to the lower parts of the legs and the heated water passes off from the top of each section, and in boilers of this character openings have been provided in the sections for the products of combustion to pass from one end toward the other of the range of sections.

The present invention relates to the peculiarities in the details of construction of the sections, as hereinafter described in detail, the front section being provided with an opening for a fire-door and with other openings for cleaning the fines, the rear section also having openings for the escape of the products of combustion to a liuc-chimney, if desired, and also passages for the products of combustion that pass along the fire-chamber and return through the upper fines, and these end sections are constructed so that the connection can be made to the escape-Hue at either the back or the front of the boiler, and the intermediate sections arev made withfreference to exposing a large extent of surface to the action of the products of combustion and to the free circulation of the water through such sections, and also to the formation of flue-passages through the upper portions of the sections for the products of combustion as they pass from one end of the fire-chamber to the escape-flue.

In the drawings, Figure 1 is a longitudinal section at about the line 1 1 of Fig. 2. Fig. 2 is a vertical section through one of the intermediate sections. Fig. 3 is a vertical section through the front boiler-section. Fig. 4. is a similar section through the rear boiler-section. Fig. 5 is a horizontal section at the line 3 3 of Fig. 2, and Fig. 6 is a horizontal section at the line 4. et of Fig. 1.

The front section A and the rear section B are at any desired distance apart, and the intermediate sections C C are similar and fill the space between the front and the back sections, and these intermediate sections C may be more or less in number. The boiler can be enlarged orcontracted,as may be necessary, by adding or removing the intermediate sections and bringing the rear section nearer to or farther from the front section, and these sections are supported by ash-pit sections D, that are preferably of the same width as the other sections, so as to 'be set together and secured by bolts 5, and they support the lower ends or legs of the sections A, B, and C, and they are preferably in the form of boxes open at one side, so that the number of these ashpit sections can correspond to the number of legs of the boiler-sections, and I have illustrated grate-bars at E, which are supported by the sections D and can be moved by the lever F and connections G, so as to shake the grate; but these parts may be of any desired character and do not need further description, and there are provided a suitable ash-pit door at H, a fire-door at Land fine-doors K and L, which close the nue-openings in the' front section, as hereinafter described.

The intermediate sections C are made with the hollow side or leg portions 6 and the cross connecting-tubes 7 8 9, and these legs and the cross connecting-tubes are of uniform width, so that the surfaces of the sections C C can set closelytogether at these portions, and in placing the sections together and making a tight furnace it is only necessary to apply a packing or adhesive material, such as asbestos cement, between one section andthe next around the outer edges and wherever necessary at the lines, and the cross connecting-tubes 7 8 9 are united by the vertical tubeslO 11 12, so as to form ilues 13 14 15 16 17 18 19 20. Below the cross connecting-tubes 7 there are inwardly-projecting water-chambers 21 22, that have inclined upper and lower surfaces, and they are not as wide as the sections C. Hence there is opportunityl for the products of combustion to ascend freely between these water-chambers 2l 22, and the water in these chambers 21 22 has an opportunity to circulate freely through them, and

IOO

at the same time such chambers absorb the heat from the fire, and they also protect the cross connecting-tubes 7 from the intense heat in the fire-chamber, and by making these water-chambers 21 and 22 in approximately the shape represented they are free to expand and contract under changes of temperature without the risk of the cast-iron cracking or the water-legs 6 6 being displaced bysuch contraction or expansion.

The sections C C, as well as the sections A and B, have upon them bosses or hubs 23 24 25, which are to be bored and screw-threaded for the reception of the connecting Water pipes or tubes. Usually it is advantageous to provide the connecting water-pipes M and N at the sides of the furnace with thimbles or connections to the bosses 23 and the waterpipes O above the furnace with screw-threaded thimbles connecting to the bosses 25, or the hot water may pass oif through pipes connected with the hubs or bosses 24, and I remark that the pipes M, N, and O are preferably made in short sections bolted together, the lengths of such sections corresponding to the width of each boiler-section, and these tubesections forming the return water-pipes and the pipes for the passage of the hot water are advantageously bolted together,as illustrated in Fig. 1. These water-pipes, however, may be of any desired character.

The end or front section A is provided with an opening 27 for the fire-door I and with upper openings 28 for the Hue-doors K, and it is also advantageous to make the front section A with openings corresponding to the openings 13 14 15 16 17 18 19 2O of the intermediate sections, and these openings are to be closed by one or more doors L, and this front section A has a crosspipe 7, corresponding to the cross-pipe 7 in the intermediate sections C, but in place of having another cross-pipe corresponding to the connectingtube 8 of the intermediate sections the connecting-tube 29 is narrower, so as to leave a fine 30 between the lower range of iiues 17 18 19 20 and the upper range of iiues 13 14 15 16. Hence when the products of combustion pass along through the lower range of fines such products of combustion can pass up through the fine 30 and return toward the rear through the upper set of ues, and at the rear end the boiler-section B is made with a fine 31, similar to the iiue 30, for connecting the upper and lower ranges of fines, so that a baiiieplate P may be introduced above the flue 31 to close the same when the products of combustion pass from the rear end to the front and return, as illustrated in Fig. 1; but this baffie-plate is to be omitted when the products of combustion pass away at the front end.

In order to allow the products of combustion to pass up from the fire-chamber R to the lower range of fines, the rear boiler-section B is made with a iiue at 32, across and below the lower tier of fine-openings 17 to 20, so that the products of combustion pass freely from the fire-chamber to the iiues, and it is advantageous to make the rear boiler-section B with a water-chamber 33 at the back of the fire-chamber R and extending across from one water-leg to 'the other water-leg, and by making a projection 34 in the rear boiler-Section corresponding approximately to half of the water-chambers 21 22 the openings between the water-chambers 21 22 of the intermediate sections and the rear section will be approximately similar to the openings between one intermediate section and thc next, and in the front section A a similar projection 35 is formed, but below the openings 28.

When the boiler-sections are set together in the manner shown in Fig. 1 and the products of combustion pass off at the rear, it is advantageous to provide a smoke-box S, with a door at 36 for cleaning the i'lues and with a damper 37, that when open allows a direct draft to the Hue or chimney at T, and when this damper 37 is closed the products of combustion travel along the lower range of lines and return by the flue 30 in the upper range of flues and pass out into the smoke-box.

The boiler-sections constructed as aforesaid are not liable to crack by contraction in casting or by the action of the lire when in use, and any section that maybe injured can be easily disconnected and removed and another substituted, and the furnace as a whole can be enlarged by the addition of intermediate sections whenever required.

If the fire-chamber is to be limited to three or more of the boiler-sections, the same may be stopped o by a cross plate or wall forming a bridge-wall, and the ash-pit may be similarly shut oi, the same being illustrated at 40, Fig. 1. The fire-door I may be made in upper and lower sections, as shown, the lower section being lined with fire-brick, so that it may ordinarily remain closed and support the fuel.

I claim as my invention- 1. The heating-boiler havingfront and rear sections and intermediate sections, the intermediate sections having water-chambers 21, 22, that are narrower than the thickness of the section and project from opposite sides toward each other and into the fire-chamber without coming into contact, and having inclined upper and lower surfaces, there being cross connecting water-tubes in the upper part of each section and fine-openings, substantially as set forth.

2. The heating-boiler having end sections and intermediate sections with the waterchambers 21, 22, the front end section having a fire-door opening and openings above to the upper fiucs of the boiler! sections and doors covering the same, and a cross connecting water-tube 7, and a narrower cross connecting water-tube 29, and an adjacent IIO IZO

iiue 30 to allow the products of combustion vand a flue 3l between the upper and lower 1o to pass from the lower to the upper ranges of range of flues that can be used for at direct lues, substantially as set forth. draft, substantially asset forth.

3. The heating-boiler having frontand rear Signed by me this 15th day of March, 1898. 5 sections and intermediate sections, the rear Section having a water-chamber at the back SAMUEL BURNS' end of the nre-chamber and a line-opening at Witnesses: 32, between the lire-chamber and the lower GEO. T. PINCKNEY, range of flues in the intermediate sections S. T. I-IAVILAND. 

